As a workaround, either require lazy-lock before loading rst-mode.el, or
(setq font-lock-support-mode '((rst-mode . jit-lock-mode) (t . jit-lock-mode)))
As a workaround, either require lazy-lock before loading rst-mode.el, or
(setq font-lock- support- mode '((rst-mode . jit-lock-mode) (t . jit-lock-mode)))